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Category:   Application (Web Browser)  >   Microsoft Internet Explorer Vendors:   Microsoft
Microsoft Internet Explorer Multiple Memory and Access Control Errors Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1016291
SecurityTracker URL:  http://securitytracker.com/id/1016291
CVE Reference:   CVE-2005-4089, CVE-2006-1303, CVE-2006-1626, CVE-2006-1992, CVE-2006-2218, CVE-2006-2382, CVE-2006-2383, CVE-2006-2384, CVE-2006-2385   (Links to External Site)
Date:  Jun 13 2006
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5.01, 6
Description:   Several vulnerabilities were reported in Microsoft Internet Explorer. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted web page that, when loaded by the target user, will trigger a buffer overflow, memory exception, access control, or other flaw and execute arbitrary code on the target system. The code will run with the privileges of the target user.

A remote user can cause an object to register an exception handler that may not properly handle certain conditions. As a result, a memory corruption error may occur and arbitrary code may be executed.

A remote user can send specially UTF-8 encoded HTML to cause arbitrary code to be executed.

A remote user can pass specially crafted data to the DXImageTransform.Microsoft.Light ActiveX control to execute arbitrary code.

A remote user can cause Internet Explorer to instantiate a COM objects that shoud not be instantiated in Internet Explorer.

A remote user can create a specially crafted cascading style sheet (CSS) that, when loaded by the target user, will cause potentially sensitive information on the target user's system to be disclosed.

A remote user can cause spoofed content to be displayed in a browser window. The address bar and other parts of the trust user interface can be displayed in the context of a trusted site while the spoofed content remains under the control of the remote user.

A remote user can create a specially crafted web page that, when loaded by the target user, will cause multipart HTML (.mht) files to be saved, appliwng remote code to be executed.

Microsoft credits the following with reporting these vulnerabilties:

Andreas Sandblad of Secunia, TippingPoint, Will Dormann of CERT/CC, H D Moore of the Metasploit Project, Yorick Koster of ITsec Security Services, hoshikuzu star_dust, and John Jones of DISC, State of Kansas.

Impact:   A remote user can create a file that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued the following fixes as part of a cumulative update for Internet Explorer:

Internet Explorer 5.01 Service Pack 4 on Microsoft Windows 2000 Service Pack 4:

http://www.microsoft.com/downloads/details.aspx?FamilyId=91A997DE-BAE4-4AC7-912D-79EF8ABAEF4F

Internet Explorer 6 Service Pack 1 on Microsoft Windows 2000 Service Pack 4 or on Microsoft Windows XP Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=0EB17A41-FB43-413B-A5CC-41E1F3DEDE4F

Internet Explorer 6 for Microsoft Windows XP Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?FamilyId=85CABE87-C4A0-4F80-BD1C-210E23FD8D81

Internet Explorer 6 for Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=CCE7C875-C9A4-4C3D-A37B-946EE5E781E7

Internet Explorer 6 for Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server 2003 with SP1 for Itanium-based Systems:

http://www.microsoft.com/downloads/details.aspx?FamilyId=C8E4CFB6-1350-4AAE-B681-EE2ECAB41118

Internet Explorer 6 for Microsoft Windows Server 2003 x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=1C7D5C6D-DDCF-485D-A1E3-60E55334FD74

Internet Explorer 6 for Microsoft Windows XP Professional x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=F91791AC-8185-4346-AA66-89F74D4B5EA7

A restart is required.

The vendor's advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms06-021.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms06-021.mspx (Links to External Site)
Cause:   Boundary error
Underlying OS:  Windows (2000), Windows (2003), Windows (XP)

Message History:   None.


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